import numpy as np
a1=np.array([[10,20,30],[40,50,60]])
print('2*3的数组a1: \n',a1)
a2=np.array([[1, 2, 2],[2, 2, 3]])
print('2*3的数组a2: \n',a2)
print('a1与a2的加法运算:\n',a1+a2)
print('a1与a2的减法运算:\n',a1-a2)
print('a1与a2的乘法运算:\n',a1*a2)
print('a1与a2的除法运算:\n',a1/a2)
print('a1与a2的幂运算:\n',a1**a2)
